Question

Phyllode is a modification of

• A. Leaf
• B. Root
• C. Stem
• D. Petiole

Answer 1

The correct option is D

Petiole

The correct option is D

Explanation of the correct option:

1. Phyllode is a modification of petiole.
2. It is a xerophytic adaptation.
3. Phyllode is flat, green in color and carries out photosynthesis, and also reduces the rate of transpiration in xerophytic plants like Opuntia.
4. Phyllodes do not bear any flower instead they bear an axillary bud.

Explanation of the incorrect option :

Option A :

1. Modification of leaves are tendrils, spines, storage leaves, leaves of insectivorous plants, etc.

Option B:

1. Roots are modified to store food and help in nitrogen fixation.
2. Examples are beetroot, turnip, beans, groundnut, etc

Option C :

1. Modification of the stems is rhizome, bulb, and tuber.
2. For example- a potato is a modified stem.

Final Answer: Phyllode is a modification of petiole.